you just need the intermediate lifts so you can raise all 4 tires above the rails ... so you can put radiused chocks for the tires ... so you don't flat spot them.I am thinking of a 4 post lift for my garage.
It does not require drilling into the floor.
For my purposes, the lift will be more for winter storage than for projects but I do like the idea of lifting the car up about 4 feet to wax the lower panels!
So, for 4 - 5 months of storage, I have been told the 4 post with drive on ramps is a better choice than a 2 post where the wheels are left dangling.